System and Method for Dynamic Knowledge-Based Authentication

2. The method of claim 1, wherein the user-related data is associated with an item of media content accessible with the one or more third-party connected accounts of the user provided by the one or more third-party account service providers via the one or more client facing applications.

3. The method of claim 2, wherein the item of media content includes a video viewed with a streaming account of the user provided by a streaming service provider via a streaming client facing application.

4. The method of claim 3, wherein the video is a latest video viewed with the streaming account of the user provided by the streaming service provider via the streaming client facing application.

5. The method of claim 2, wherein the item of media content includes a photo stored with a storage service account of the user provided by a storage service provider via a storage service client facing application.

6. The method of claim 2, wherein the item of media content includes media content shared with a social media account of the user provided by a social media provider via a social media client facing application.

7. The method of claim 1, wherein the authentication challenge is generated by an authentication module of a payment platform of the authentication system.

8. The method of claim 1, wherein the authentication challenge is generated by the one or more third-party account service providers.

9. The method of claim 1, wherein the authentication challenge is selected out of the plurality of authentication challenges generated by the at least one processor of the authentication system based on the device configuration of the user and the location of the user, wherein the device configuration of the user includes a type of the portable consumer device of the user and a capability of the portable consumer device of the user, and wherein the expected authentication response is accessible to the user, after the authentication challenge is generated, by the user accessing the one or more third-party connected accounts of the user provided by the one or more third-party account service providers via the one or more client facing applications on the portable consumer device.

10. The method of claim 1, wherein the authentication system includes a payment platform, and wherein the computer includes a merchant computer associated with a merchant.

12. The authentication system of claim 11, wherein the user-related data is associated with an item of media content accessible with the one or more third-party connected accounts of the user provided by the one or more third-party account service providers via the one or more client facing applications.

13. The authentication system of claim 12, wherein the item of media content includes a video viewed with a streaming account of the user provided by a streaming service provider via a streaming client facing application.

14. The authentication system of claim 13, wherein the video is a latest video viewed with the streaming account of the user provided by the streaming service provider via the streaming client facing application.

15. The authentication system of claim 12, wherein the item of media content includes a photo stored with a storage service account of the user provided by a storage service provider via a storage service client facing application.

16. The authentication system of claim 12, wherein the item of media content includes media content shared with a social media account of the user provided by a social media provider via a social media client facing application.

18. The authentication system of claim 11, wherein the authentication challenge is generated by the one or more third-party account service providers.

19. The authentication system of claim 11, wherein the authentication challenge is selected out of the plurality of authentication challenges generated by the at least one processor of the authentication system based on the device configuration of the user and the location of the user, wherein the device configuration of the user includes a type of the portable consumer device of the user and a capability of the portable consumer device of the user, and wherein the expected authentication response is accessible to the user, after the authentication challenge is generated, by the user accessing the one or more third-party connected accounts of the user provided by the one or more third-party account service providers via the one or more client facing applications on the portable consumer device.